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Kvantovaya Elektronika, 2014, Volume 44, Number 5, Pages 431–439 (Mi qe15923)  

This article is cited in 9 scientific papers (total in 9 papers)


Ti:sapphire/KrF hybrid laser system generating trains of subterawatt subpicosecond UV pulses

V. D. Zvorykin, A. A. Ionin, A. O. Levchenko, G. A. Mesyats, L. V. Seleznev, D. V. Sinitsyn, N. N. Ustinovskii, A. V. Shutov

P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: The GARPUN-MTW Ti:sapphire/KrF hybrid laser system is used to investigate different multipass schemes for amplifying trains of ultrashort pulses (USPs) of subpicosecond duration. It is shown that, for an USP repetition period of 3 – 5 ns, which exceeds the gain-medium recovery time (~2 ns), trains are amplified in the same way as single USPs. Due to this, a train can efficiently extract pump energy from the amplifier and sum energies of individual USPs. The energy of a four-USP train, extracted during four passes through the preamplifier and two passes through the final KrF amplifier (4 + 2 scheme), is saturated at a level of 1.6 J and corresponds to maximum USP peak powers of about 0.6 TW. The energy of amplified spontaneous emission (ASE), on the contrary, rapidly increases at a large total gain length Leff ≈ 6 m and is approximately equal to the USP energy. In the (4 + 1) and (2 + 2) schemes the USP energy decreases only slightly, to Eout = 1.3 and 1.2 J, and the ASE fraction is reduced to about 10% and 3%, respectively. USP self-focusing leads to multiple laser beam filamentation and a 200-fold local increase in the radiation intensity in filaments, to ~2 × 1011 W cm-2, a level at which the nonlinear loss in the output CaF2 windows of the KrF amplifier, caused by three-photon absorption, nonlinear scattering, and broadening of the radiation spectrum to a value exceeding the gain band of the KrF laser transition, becomes the main factor determining the saturation of the USP output energy.

Keywords: amplification of subpicosecond subterawatt pulses in KrF amplifiers, multipass amplification schemes, nonlinear loss in amplifier windows.

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English version:
Quantum Electronics, 2014, 44:5, 431–439

Bibliographic databases:

PACS: 42.55.Rz, 42.55.Lt, 42.60.By, 42.60.Jf, 42.65.Jx, 42.65.Re
Received: 03.03.2014

Citation: V. D. Zvorykin, A. A. Ionin, A. O. Levchenko, G. A. Mesyats, L. V. Seleznev, D. V. Sinitsyn, N. N. Ustinovskii, A. V. Shutov, “Ti:sapphire/KrF hybrid laser system generating trains of subterawatt subpicosecond UV pulses”, Kvantovaya Elektronika, 44:5 (2014), 431–439 [Quantum Electron., 44:5 (2014), 431–439]

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    This publication is cited in the following articles:
    1. V.D.. Zvorykin, A.A.. Ionin, A.O.. Levchenko, L.V.. Seleznev, D.V.. Sinitsyn, Appl. Opt, 53:31 (2014), I31  crossref  isi  elib  scopus
    2. I.I. Farukhshin, A.S. Nizamutdinov, V.V. Semashko, S.L. Korableva, J. Phys.: Conf. Ser, 560 (2014), 012016  crossref  adsnasa  isi  scopus
    3. A.A. Dergachev, A.A. Ionin, V.P. Kandidov, D.V. Mokrousova, L.V. Seleznev, Laser Phys. Lett, 12:1 (2015), 015403  crossref  adsnasa  isi  elib  scopus
    4. V.D. Zvorykin, A.A. Ionin, A.O. Levchenko, L.V. Seleznev, A.V. Shutov, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2015  crossref  mathscinet  isi  scopus
    5. Shlenov S.A. Dergachev A.A. Ionin A.A. Kandidov V.P. Mokrousova D.V. Seleznev L.V. Sinitsyn D.V. Sunchugasheva E.S. Shustikova A.P., 18Th International School on Quantum Electronics: Laser Physics and Applications, Proceedings of Spie, 9447, ed. Dreischuh T. Gateva S. Serafetinides A., Spie-Int Soc Optical Engineering, 2015  crossref  isi  scopus
    6. Zvorykin V.D., Goncharov S.A., Ionin A.A., Mokrousova D.V., Ryabchuk S.V., Seleznev L.V., Shutov A.V., Smetanin I.V., Sunchugasheva E.S., Ustinovskii N.N., Laser Phys. Lett., 13:12 (2016), 125404  crossref  isi  elib  scopus
    7. Quantum Electron., 47:4 (2017), 319–326  mathnet  crossref  isi  elib
    8. V. D. Zvorykin, I. V. Smetanin, N. N. Ustinovskii, A. V. Shutov, Appl. Phys. B-Lasers Opt., 124:5 (2018), 80  crossref  isi  scopus
    9. V. D. Zvorykin, I. G. Lebo, V A. Shutov , N. N. Ustinovskii, Matter Radiat. Extrem., 5:3 (2020), 035401  crossref  isi  scopus
  • Квантовая электроника Quantum Electronics
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